Great, It works perfectly.

I just have to put together the mechanism with the variables.

so instead of an URL not supported by JET, use an UNC

In my example I simply have to use variables or configurations to build the path.

instead of the original

http://smportal.onsemi.com/C10/Reporting%20Projects/Development%20Process%20and%20Templates/CalendarWeeks.xls

I use this

\\smportal.onsemi.com\C10\Reporting Projects\Development Process and Templates\CalendarWeeks.xls